demonstration system epc9143 quick start guidedemonstration system epc9143 quick start guide 18–60...

Demonstration System EPC9143Quick Start Guide18–60 V Input, 12 V, 25 A Output300 W 1/16 th Brick Evaluation Module

Revision 4.0

http://epc-co.com/epc

QUICK START GUIDE Demonstration System EPC9143

EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM | ©2020 | | 2

DESCRIPTION The EPC9143 1/16th brick evaluation power module is designed for 48 V to 12 V DC-DC applications. It features the EPC2053 eGaN® FETGaN, and enhancement mode field effect transistors, as well as the Microchip dsPIC33CK32MP102 16-bit digital controller. Other features include:

• High efficiency: 95% @ 12 V/25 A output• Dimension: 33 mm x 22.9 mm x 9 mm (1.30 in. x 0.90 in. x 0.35 in.)• Industry standard footprint and pinout• Positive logic on/off• Power good output• Constant switching frequency: 500 kHz• Remote output voltage sense• Re-program – Advanced voltage mode control (default) • Fault protection: o Input undervoltage o Input overvoltage o Regulation error

REGULATORY INFORMATION This power module is for evaluation purposes only. It is not a full-featured power module and cannot be used in final products. No EMI test was conducted. It is not FCC approved.

FIRMWARE UPDATES Every effort has been made to ensure all control features function as specified. It may be necessary to provide updates to the firmware. Please check the EPC and Microchip websites for the latest firmware updates.

EPC9143 top view

EPC9143 bottom viewTable 1: Absolute Maximum Ratings

Symbol Parameter Conditions Min Max UnitsVIN Input voltage 65 VIOUT Output current With sufficient cooling 25 A

TCOperating

temperatureMeasured at FET case as indicated in

thermal measurement figure, airflow 800 LFM

100 °C

Table 2: Electrical CharacteristicsSymbol Parameter Conditions Min Typ Max Units

VIN Input voltage 18 48 60 VVIN,on Input UVLO turn on voltage 18 VVIN,off Input UVLO turn off voltage 17.5 VVOUT Output voltage 5 12 15 VCOUT External capacitance load The output voltage is set in the controller 200 550 µF

tOUT,rise Output voltage rise time 100 msΔVOUT Output voltage ripple IOUT = 25 A, mounted in EPC9531 test fixture 100 mV

IOUT Output current With sufficient cooling 0 25 AIOUT,limit Output current limit threshold 26 27 A

fs Switching frequency 500 kHzOn/off control input logic

Voff Logic low (Module Off) 1 VVon Logic high (Module On) 1.3 10 VIoff Current sink for disable 1 mA

Power good output logicPgood Logic high (in regulation) 2.6 3.1 3.3 VPgood Logic low (not regulated) 0 0.25 0.7 VIPgood Sink current capability of Pgood 20 mAIPgood Source current capability of Pgood 20 mA



ELECTRICAL PERFORMANCETypical efficiency and power loss

Typical output voltage ripple Typical transient response

96

94

92

90

88

86

E�ci

ency

(%)

IOUT (A)0 5 10 15 20 25

16

14

12

10

8

6

4

2

Loss

(W)

IOUT (A)0 5 10 15 20 25

VOUT = 12 V

VOUT = 9 V

VOUT = 5 V

VOUT = 12 V

VOUT = 9 V

VOUT = 5 V

98

96

94

92

90

88

E�ci

ency

(%)

IOUT (A)0 5 10 15 20 25

16

14

12

10

8

6

4

2

Loss

(W)

IOUT (A)0 5 10 15 20 25

VIN = 48 V

VIN = 36 V

VIN = 48 V

VIN = 36 V

Figure 1: 48 V input, various output voltages

Figure 2: 12 V output, various input voltages

Figure 3: VIN = 48 V, VOUT = 12 V, IOUT = 25 A Figure 4: VIN = 48 V, VOUT = 12 V, 50% (12.5 A) to 100% (25 A) at 1 kHz repetition rate output current transitions

1 μs/div50 mV/div

200 μs/div200 mV/div

5 A/div

VOUT

IOUT



ELECTRICAL PERFORMANCE (continued)Startup

Typical load regulation

Typical waveform

Temperature vs. output current

Figure 5: Start-up with EN pin floating

Figure 7: VIN = 48 V, VOUT = 12 V

Figure 6: EN pin controlled turn on

Figure 8: VIN = 48 V, VOUT = 12 V, 800 LFM forced air cooling

Figure 9: Measured switch-node voltage for one phase at VIN = 48 V, VOUT = 12 V, IOUT = 25 A

Power Good (Pin 5)

EN (Pin 2)VOUT

VOUT

100 ms/div4 V/div2 V/div

100 ms/div4 V/div2 V/div

12.06

12.05

12.04

12.03

12.02

12.01

12.00

V OUT

(V)

IOUT (A)0 5 10 15 20 25

100

90

80

70

60

50

Tem

pera

ture

(°C)

IOUT (A)0 5 10 15 20 25

8 V/div200 ns/div



Remote output voltage sense

Remote sense can compensate for output voltage distribution drop by sensing the actual output voltage at the point of load. The maximum voltage allowed between the output and sense pins is 5% of the output voltage (0.6 V for 12 V output). If the remote sense feature is not used, the pin can be either left floating or connected to Vout+.

Power good

This module features a power good signal with 3.3 V logic. This signal will be logic high when the output voltage is regulated to +/- 10% of the setpoint, and logic low for all other conditions. The maximum sink/source current capability for this input is given in table 2. If the power good feature is not used, the pin should be left floating. During startup, the power good signal is set 200 ms after the output voltage has reached and maintained the nominal regulation set-point. This signal is reset instantly when a fault condition has been detected.

Output voltage trim (adjustment)

The output voltage of this module can be trimmed (adjusted) by connecting an external resistor between the Trim pin and Vout- (GND) pin as shown in figure 11.

The new output voltage can be calculated as follows:

For this design, VFB is 2.5 V, RFB1 is 18 kΩ, RFB2 is 4.75 kΩ, therefore

The maximum trim voltage is 1 V using this method. It is recom-mended to re-program the controller to further change the output voltage set point. The programmable output voltage range is between 3.3 V and 15 V DC.

QUICK START PROCEDURE The EPC9143 1/16th brick module is best tested plugged into EPC9531 test fixture. The EPC9531 QSG provides detailed operating procedure instructions. See EPC9531 QSG.

R1

8 Vout+

RFB1

RFB2

VFB

7 Sense+

6 Trim

4 Vout–(GND)

FB1FBOUT RFB2R1V FBV( )V = R1

1+ +

OUT R1 [kΩ]4512V = +

OPERATING CONSIDERATIONS

Output capacitance

Minimum external output capacitance of 200 µF is required for stability. The maximum capacitance tested is 550 µF. Values higher than 550 µF will reduce the control bandwidth to below 15 kHz. The EPC9531 test fixture includes this extra capacitance and is recommended for testing.

Input capacitance

To minimize the impact from the input voltage feeding line, low-ESR capacitors should be located at the input to the module. It is recommended that a 33 µF - 100 µF input capacitor be placed near the module.

Over-current protection

This module supports two different control schemes that are discussed in more detail in the control section. The operating schemes are (1) conventional average current mode control (ACMC), and (2) advanced voltage mode control (AVMC), where over-current protection is implemented differently in each operating mode.

With ACMC operation and if the load current exceeds a pre-determined maximum setpoint, the module will operate in constant current mode where the output voltage will no longer be regulated. The module can operate indefinitely in this mode and once the load current falls below the maximum setpoint, then the module will revert back voltage regulation.

With AVMC operation and if the load current exceeds a pre-determined maximum setpoint, this condition will be regarded as a fault condition and the module will shut down. The module will then attempt to restart after 2 seconds. This shut down and restart cycle will continue until the over-current condition clears.

Remote On/Off

This module has positive on/off logic: the module is turned on during a logic high and off during a logic low.

Remote on/off can be controlled by an external switch between the on/off pin and the Vin- (GND) pin as shown in figure 10.

The switch can be an open collector or open drain. If the remote on/off feature is not used, leave the on/off pin floating.

1 Vin+

2 On/O�

3 Vin– (GND)

Figure 10. Adding an external MOSFET for remote enable/disable

Figure 11. External resistor connection for output voltage trim adjust.

https://epc-co.com/epc/Portals/0/epc/documents/guides/EPC9531_qsg.pdf



CONTROLLERThe EPC9143|1/16th brick evaluation power module features a Microchip dsPIC33CK32MP102 Digital Signal Controller (DSC). This 100 MHz single core device is equipped with dedicated peripheral modules for Switched-Mode Power Supply (SMPS) applications, such as a feature-rich 4-channel (8x output), 250 ps resolution pulse-width modulation (PWM) logic, three 3.5 Msps Analog-To-Digital Converters (ADC), three 15 ns propagation delay analog comparators with integrated Digital-To-Analog Converters (DAC) supporting ramp signal generation, three operational amplifiers as well as Digital Signal Processing (DSP) core with tightly coupled data paths for high-performance real-time control applications. The device used is the smallest derivative of the dsPIC33CK single core and dsPIC33CH dual core DSC families. The device used in this design comes in a 28 pin 6x6 mm UQFN package, specified for ambient temperatures from -40 to +125° C. Other packages including a 28 pin UQFN package with only 4x4 mm are available.

The dsPIC33CK device is used to drive and control the converter in a fully digital fashion where the feedback loops are implemented and executed in software. Migrating control loop execution from analog circuits to embedded software enhances the flexibility in terms of applied control laws as well as making modifications to the feedback loop and control signals during runtime, optimizing control schemes

and adapting control accuracy and performance to most recent operating conditions. As a result, digital control allows users to tailor the behavior of the converter to application specific requirements without the need for modifying hardware.

There are two firmware versions available for the EPC9143 1/16th brick evaluation power module:

• Conventional, Robust Average Current Mode Control (ACMC) (figure 12): With this firmware the power converter is controlled by one outer voltage loop providing a shared reference to two independent inner average current loops controlling the phase current of each converter phase. This conventional approach ensures proper current balancing between both phases of this interleaved converter, operating 180° out of phase to minimize the input current ripple and filtering. The inner current loops are adjusted to average cross-over frequencies of 10 kHz. To balance the current reference perturbation of the inner current loops, the outer voltage loop has been adjusted to an average cross-over frequency of 2 kHz, which determines the overall response time of the converter.

• Adaptive Type IV Voltage Mode Control (AVMC) with featuring Adaptive Gain Control (AGC) and Phase Current Balancing PWM Steering (figure 13): The second, alternative firmware is tailored to intermediate bus converter module applications in power distribution networks (PDN). The major focus of this firmware lies on reducing PDN segment decoupling capacitance by maximizing the control bandwidth and the output impedance tuning capabilities, enhancing system robustness while minimizing cost.

Figure 12. Interleaved buck converter average current mode control

Figure 13. Interleaved buck converter advanced voltage mode control

ADC

REF error HC(z)

Compensator

output

VoltageDivider

ADC

REF error Gp(s)(Plant A)PWM

output

CurrentSense Amp

Voltage Loop

Current Loop A

IOUT

VOUT

input

input

Anti-Windup

+ –

HC(z)Compensator

Current Loop B

+ –

REF

ADC

error PWMoutput

CurrentSense Amp

IOUT

input

HC(z)Compensator+ –

Gp(s)(Plant B)

input ADC

VoltageDivider

ADC

Current Sense A

Current Feedback(10 kHz state machine)

ADCAdaptive Gain Control (AGC)

PWMDistribution

output

Current Sense B

ADC

O�set Compare

Voltage Feedback(500 kHz cycle-by-cycle control)

Anti-Windup

Gp(s)(Plant B)

Gp(s)(Plant A)+/–

REF error

+ –

VOUT

IPH_A IPH_B

VIN

HC(z)Compensator Voltage

Divider



PROGRAMMINGThe Microchip dsPIC33CK controller can be re-programmed using the in-circuit serial programming port (ICSP) available on the RJ-11 programming interface as well as the 5-pin header provided by the EPC9531 test fixture. These interfaces support all of Microchip’s in-circuit programmers/debuggers, such as MPLAB® ICD4, MPLAB® REAL ICE or MPLAB® PICkit4 and previous derivatives. See EPC9531 QSG.

MECHNICAL SPECIFICATIONS

Pin 1 Chamfer

Note: Dimensions are in mm (inches)

Pin 1

Pin 4

Top view

Front view

Bottom view

22.9 (0.90)

33.0 (1.30)

9.0 (0.35)

3.8 (0.15)

Figure 14. EPC9143 mechanical dimensions

Figure 15: Pin assignment

8 Vout+

7 Sense+

6 Trim

5 Power good

4 Vout–(GND)

8

7

6

5

4

Programming /Communication

Interface

1

2

3

2 On/O�

1 Vin+

3 Vin– (GND)

MCLR 3.3 V GND PGD PGC

Top view Bottom view

https://epc-co.com/epc/Portals/0/epc/documents/guides/EPC9531_qsg.pdf



THERMAL MANAGEMENTThermal management is very important to ensure proper and reliable operation. Sufficient cooling is required for this module to operate in the full specified output current range. Forced air of 800 LFM is used for specification testing.

Heatsink or heat spreader can also be used.

The hot spots are the control FETs of the buck converter (Q1 and Q3) as shown in figure 16:

Q1

Q1

Q3

Q3

Figure 16. VIN = 48 V, VOUT = 12 V, 800 LFM forced air cooling

Thermal derating

Without sufficient cooling, the output current capability is reduced. The module temperature should be monitored to ensure the maximum temperature does not exceed the rating. Especially when the input voltage is higher than 48 V, the maximum output current is reduced.



Table 3: Bill of Materials Item Qty Reference Part Description Manufacturer Part #

1 6 C1, C2, C3, C19, C21, C35 Capacitor, 1 μF, 20%, 100 V, X7S, 0805 TDK C2012X7S2A105M125AB

2 10 C5, C6, C7, C8, C10, C27, C28, C29, C30, C37 Capacitor, 22 µF, 25 V, 0805 Murata GRT21BR61E226ME13L

3 7 C14, C22, C38, C49, C50, C62, C65 Capacitor, 0.1 µF ±10% 25 V, X7R, 0402 Yageo CC0402KRX7R8BB104

4 2 C15, C32 Capacitor, 4.7 µF, 10 V, X5R, 0402 TDK C1005X5R1A475K050BC

5 10 C20, C23, C40, C41, C42, C43, C44, C45, C46, C47 Capacitor, 0.22 µF, 100 V, X7S, 0603 Taiyo Yuden HMK107C7224

6 1 C33 Capacitor, 10 nF, 5%, 25 V X7R, 0402 Kemet C0402C103J3REC

7 1 C34 Capacitor, 1000 pF, 25 V, C0G/NP0 0402 Murata GRM1555C1E102JA01D

8 1 C39 Capacitor, 10 nF, 10%, 16 V, X7R , 0402 Kemet C0402C103K4RECAUTO

9 2 C60, C63 Capacitor, 560 pF, 50 V, C0G/NP0, 0402 Murata GRM1555C1H561JA01D

10 2 C61, C64 Capacitor, 2.2 µF, 25 V Murata GRM155R61E225ME15D

11 4 C67, C69, C92, C95 Capactior, 10000 pF, 50 V, X7R, 0402 Murata GRM155R71H103KA88D

12 1 C68 Capacitor, 220 pF, 10%, 50 V, X7R, 0402 Kemet C0402C221K5RACTU

13 1 C90 Capacitor, 0.1 µF, 100 V, X7S, 0603 TDK CGA3E3X7S2A104K080AB

14 1 C91 Capacitor, 1 µF, 16 V, X6S, 0402 TDK C1005X6S1C105K050BC

15 1 C93 Capacitor, 10 µF, ±10%, 16 V, X5R, 0603 Murata GRM188R61C106KAALD

16 1 C94 Capacitor, 3300 pF, 100 V, X7S, 0402 TDK CGA2B3X7S2A332M050BB

17 2 C96, C98 Capacitor, 1 µF, 25 V, X5R, 0402 Murata GRT155R61E105ME01D

18 1 C97 Capacitor, 22 µF, 6.3 V, X5R, 0402 Samsung CL05A226MQ5N6J8

19 4 Q1, Q2, Q3, Q4 eGaN® FET, 100 V, 3.8 mΩ EPC EPC2053

20 2 R1, R63 Resistor, 10 kΩ, ±5%, 0.063 W, 1/16 W, 0402 Yageo RC0402JR-0710KL

21 4 R7, R9, R13, R15 Resistor, 1 Ω ±1%, 0.063 W, 1/16 W, 0402 Yageo RC0402FR-071RL

22 4 R8, R10, R14, R16 Resistor, 0.5 Ω 1% ,1/8 W, 0402 Yageo PT0402FR-7W0R5L

23 3 R20, R64, R65 Resistor, 20 Ω 1%, 1/16 W, 0402 Yageo RC0402FR-0720RL

24 1 R21 Resistor, 110 kΩ, 1%, 1/10 W, 0603 Panasonic RC0603FR-07110KL

25 1 R22 Resistor, 4.87 kΩ 1%, 1/10 W, 0603 Panasonic RC0603FR-074K87L

26 1 R23 Resistor, 18 kΩ 0.1%, 1/16 W, 0402 Panasonic ERA-2AEB183X

27 1 R24 Resistor, 4.75 kΩ 0.1%, 1/16 W, 0402 Panasonic ERA-2AEB4751X

28 1 R26 Ferrite Bead, 180 Ω, 0603, 1LN Murata BLM18PG181SN1D

29 4 R32, R33, R34, R35 Resistor, 22 kΩ 5%, 1/16 W, 0402 Yageo RC0402JR-0722KL

30 2 R61, R62 Resistor, 1 mΩ ±5%, 1 W, 0805 Susumu KRL2012E-M-R001-J-T5

31 1 R90 Resistor, 127 kΩ 1%, 1/10 W, 0603 Yageo RC0603FR-07127KL

32 1 R91 Resistor, 3.65 kΩ 1%, 1/16 W, 0402 Yageo RC0402FR-073K65L


34 1 R94 Resistor, 68 kΩ 5%, 1/16 W, 0402 Yageo RC0402JR-0768KL

35 1 R95 Resistor, 0 Ω JUMPER, 1/16 W, 040 Yageo RC0402JR-070RL



38 6 J1, J2, TP1, TP2, TP9, TP10 PC PIN .040 DIA 3102-1 SERIES Mill-Max 3102-1-00-21-00-00-08-0

39 2 J4, J5 CONN PC PIN CIRC 0.062DIA GOLD Mill-Max 3144-1-00-15-00-00-08-0

40 2 L1, L2 Inductor, 2.4 µH, 16.5A, 2.76 mΩ TDK B82559A0242A013

41 1 L90 Inductor, 100 µH, 160 MA, 3.5 Ω Murata 82104C

42 2 U2, U5 UPI, UP1966A, USMD, BGA uPI uP1966A

43 1 U20 IC, Conroller, 16 BIT DSC SINGLE CORE 32 K FLASH Microchip DSPIC33CK32MP102-E/2N

44 2 U61, U62 IC, Current Sense Amplifier, 1 CIRCUIT SOT23-6 Microchip MCP6C02T-050E/CHY

45 1 U90 IC, REG BUCK ADJ, 300 MA, 8LLP Texas Instruments LM5018SD/NOPB

46 1 U91 IC, LDO, 500 mA TI TLV75533PDRVR

QUICK START GUIDEDem

onstration System EPC9143

EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM

| ©2020 |

| 10

Figure 17: EPC9143 Controller schematic

.040 dia pin

1

TP1PG

J4

J5

PGND

J1

J2

VIN

PGND

UVLO Setting: 8V on, 1.7 V hystersis

.040 dia pin

1

TP2EN

.040 dia pin

1

TP9VOUTS

.040 dia pin

1

TP10

16.5 kR98

86.6 kR99

127 k

R90

VIN

EN

0.1 μF , 100 VC90

100 μH 160 mA

L90

1 μF, 16 VC91

10 nF, 50 VC92

10 nF, 50 VC95

11.3 kR92

3.65 kR91

10 μF, 16 VC93

VCC5V

3V3PGND

AVDDPGND3V3

0.1 μF, 25 VC49

3V3

0.1 μF, 25 VC38

AVDD

1 2Ferrite Bead 180 Ω 1 LN

R26

22 μF, 6.3 VC97

1 μF, 25 VC96

IN

EN GND

OUT

NCNC

U91

TLV75533PDRVR

3V3

0 Ω

R95VCC5V

1

26

4

5

3GM1

GM2

RM3 VOUT

VREF

VIM

VIP

VSS

VDDU61

MCP6C02T-050E/CHY

560 pF, 50 VC60

3V3

0.1 μF, 25 VC62

2.2 μF, 25 VC61

ISENSE1

ISENSE1 3V3 3V3

1

26

4

5

3GM1

GM2

RM3 VOUT

VREF

VIM

VIP

VSS

VDDU62

MCP6C02T-050E/CHY

560 pF, 50 VC63

3V3

0.1 μF, 25VC65

2.2 μF, 25 VC64

ISENSE2

ISENSE2 3V3 3V3

1nF, 25VC34

110 kR21

4.87 kR22

10nF, 25VC33

VIN_SNS

VIN

4.75kR24

18 kR23

20 ΩR20

VOUT_SNS

VOUTS

VOUT

CS2+VOUT

CS1+VOUT

VOUT

VOUT_SNS

VIN

VIN

68 k

R943300 pF , 100 V

C94

5 V Supply

3.3 V Supply Programming Port

fs: 440 kHz

1 μF, 25 VC98

12345

J3DNP

PGCPGDPGND3V3MCLR

1

Reg

Timer

7

UVLO

Logic

2

Gnd

Vin

Ilim

8

6

SD

RonSW

3

4

FB5

1.225V

1.62V OV

1.225V

VCC

BST0.66V

20µA

U90LM5018SD/NOPB

10 k

12

R1

3V3

MCLR

PGND

IREF

IREF

IREFDAC

MCLR

123456789

101112

RP46/PWM1H/RB14RP47/PWM1L/RB15/MCLROA1OUT/AN0/CMP1A/IBIAS0/RA0 OA1IN-/ANA1/RA1OA1IN+/AN9/RA2DACOUT/AN3/CMP1C/RA3 AN4/CMP3B/IBIAS3/RA4AVDDAVSSVDDVSSOSCI/CLKI/AN5/RP32/RB0

1314 OSCO/CLKO/AN6/RP33/RB1 OA2OUT/AN1/AN7/ANA0/CMP1D/CMP2D/CMP3D/RP34/INT0/RB2 15

1617181920212223242526

TDI/RP44/PWM2H/RB12 TCK/RP43/PWM3L/RB11 TMS/RP42/

PWM3H/RB10 VDDVSS

PGC1/AN11/RP41/SDA1/RB9 PGD1/AN10/RP40/SCL1/RB8 TDO/AN2/CMP3A/RP39/RB7

PGC3/RP38/SCL2/RB6 PGD3/RP37/SDA2/RB5 PGC2/OA2IN+/

RP36/RB4 PGD2/OA2IN-/AN8/RP35/RB3

27RP45/PWM2L/RB13 28

U20

DSPIC33CK32MP102-E/2N

10 nF, 25 VC39

0.1 μF, 25 VC50

3V33V3

IREF

OA2IN+

20 Ω

R64

20 Ω

R65

IREFDAC OA2IN+

220 pF, 50 VC68

10 k1 2R63

PGD

PWM1LPWM1H

PG

ISENSE1VOUT_SNS

VIN_SNS

ISENSE2

PGC

PWM2HPWM2L

C4DNP

IREF

QUICK START GUIDEDem

onstration System EPC9143

EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM

| ©2020 |

| 11

Figure 18: EPC9143 Power Stage schematic

0.1 μF , 25 VC14

5VHS1 SW1

R7 1 Ω

0.5 Ω R8UG1

PWM1H SW1

VCC5V

1 ΩR9

4.7 μF, 10 VC15

LG1R10

VCC5V

U2

uP1966A

0.1 μF , 25 VC22

5VHS2 SW2

1 ΩR13

R14 0.5 Ω

0.5 Ω

UG2

PWM2H SW2

VCC5V

R15 1 ΩPWM2L

4.7 μF, 10 VC32

LG2R16 0.5 Ω

VCC5V

U5

uP1966A

VIN

1Q1EPC2053UG1

VOUT

2.4 μH

L1

B82559A0242A013 1 mΩ

R61SW1

LG1 1Q2

EPC2053 CS1+

PGND10 nF , 50 VC67

PGND

VIN

1Q3EPC2053UG2

VOUT

2.4 μH

L2 B82559A0242A013

1 mΩ

R62SW2

LG2 1

Q4EPC2053

CS2+

PGND

10 nF , 50 VC69

PGND

VINVIN VINVIN VIN VIN VINVIN

1 μF , 100 VC19

1 μF , 100 VC21

1 μF , 100 VC35

220 nF , 100 VC23

220 nF , 100 VC44

220 nF , 100 VC45

220 nF , 100 VC46

220 nF , 100 VC47

VINVIN VIN VINVIN

220 nF , 100 VC20

220 nF , 100 VC40

220 nF , 100 VC41

220 nF , 100 VC42

220 nF , 100 VC43

1 μF , 100 VC2

1 μF , 100 VC3

1 μF , 100 VC1

VIN VIN VIN

VOUT

22 μF , 25 VC5

22 μF , 25 VC6

22 μF , 25 VC7

22 μF , 25 VC8

22 μF , 25 VC10

VOUT

22 μF , 25 VC37

22 μF , 25 VC27

22 μF , 25 VC28

22 μF , 25 VC29

22 μF , 25 VC30

22 kR32

22 kR33

PWM1L

22 kR34

22 kR35



EPC would like to acknowledge Microchip Technology Inc. (www.microchip.com) for their support of this project.

Microchip Technology Incorporated is a leading provider of smart, connected and secure embedded control solutions. Its easy-to-use development tools and comprehensive product portfolio enable customers to create optimal designs, which reduce risk while lowering total system cost and time to market. The company’s solutions serve customers across the industrial, automotive, consumer, aerospace and defense, communications and computing markets.

The EPC9143 system features the dsPIC33CK32MP102 16-Bit Digital Signal Controller with High-Speed ADC, Op Amps, Comparators and High-Resolution PWM. Learn more at www.microchip.com.

https://www.microchip.com/

https://www.microchip.com/wwwproducts/en/dsPIC33CK32MP102

https://www.microchip.com/

EPC Products are distributed through Digi-Key.www.digikey.com

For More Information:

Please contact [email protected] your local sales representative

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Demonstration Board NotificationThe EPC9143 board is intended for product evaluation purposes only. It is not intended for commercial use nor is it FCC approved for resale. Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Quick Start Guide. Contact an authorized EPC representative with any questions. This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk. As an evaluation tool, this board is not designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not RoHS compliant. Efficient Power Conversion Corpora-tion (EPC) makes no guarantee that the purchased board is 100% RoHS compliant.The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this Quick Start Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved. Disclaimer: EPC reserves the right at any time, without notice, to make changes to any products described herein to improve reliability, function, or design. EPC does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, or other intellectual property whatsoever, nor the rights of others.

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